#include <stdio.h>

int main(int argc, char *argv[])
{
    float positive = 1.12345;
    float negative = -2.12345;
    float index = 3.0e-4;


    printf("%.2f\n", 10.0 / 3 * 3);

    printf("sizeof(float) = %lu\n", sizeof(float));
    printf("positive: %f \n", positive);
    printf("negative: %f \n", negative);
    printf("index: %f \n", index);

    putchar('\n');
    putchar('\n');
    putchar('\n');
    float i = 2.3e-53; 

    if (i>0) {
        printf("i bigger than 0\n");
    } else if (i == 0) {
        printf("i equal to 0\n");
    } else if (i < 0) {
        printf("i less than 0\n");
    } else {
        printf("error\n");
    }

    return 0;
}
